In the battle for the world’s longest stems, Britain and Russia don’t have a leg up on the Big Apple.

Earlier this month, Russia sparked an international incident when it crowned Anastasia Strashevskaya, an 18-year-old law student, “Miss Longest Legs” in a beauty pageant. Her legs measure 42 inches (from hip to heel bone).

Days later, British student and model Alexandra Robertson emerged from obscurity to top Strashevskaya with a whopping 47 inches of leg. The 20-year-old Robertson, who is 6 feet 1, seemed to be the leggiest lady in all the land.

The 5-foot-11, blue-eyed stunner with 47-inch legs was discovered by The Post, and while her stems are Amazonian, her life is more down-to-earth.

A former Penn State volleyball player who eschews heels for flats, Banker dreams of being a television host and says lanky legs are so common in her family that even her goldendoodle, Tuna, has uncommonly long ones.

“I’ve been around tall girls my whole life with volleyball, so I know my legs are long, but I never thought to enter a contest or get a title,” says Banker, lounging in a black leotard atop the 75 Wall St. condo, with its equally towering views of the Brooklyn Bridge and her native borough.

“It’s not necessarily what I’d like to be known for. It’s just how I was born. I didn’t do anything special for it,” she says.

Banker, now based in Manhattan, grew up in Marine Park, Brooklyn, then moved upstate to Orange County before starting high school. Despite always being told she should model, Banker focused on sports.

“I was never the fastest, I never jumped the highest, I was never the strongest, but my height definitely helped. And I always worked hard.”

Hard enough to earn a spot on the elite national championship Penn State volleyball team — where, she says, she was sometimes dwarfed by her teammates even though her legs were longer than theirs.

Russia and Britain recently boasted of their long-legged beauties — but lanky New York model Brooke Banker is giving them a run for their money with her 47-inch gams.Photo: Astrid Stawiarz

“I was definitely one of the shorter girls on the team,” admits Banker, who earned a bachelor’s degree in public relations. In 2009, she moved to Los Angeles County and pursued an additional degree in aviation science with the intention of becoming an air traffic controller. Instead, she caught the modeling bug.

“One of my best friends was taking up photography, so we started shooting,” says Banker, who was quickly cast by her friend’s classmates for projects. “I decided to move back to New York in 2010 and give modeling a shot.”

She began working with Monarch Agency about a year ago and has been doing fashion presentations, look books and a bit of runway.

“She definitely has the longest legs of any model that I’ve worked with,” says Monarch CEO Catherine Smith. “She’s the newest talent who we’re excited about. She’s super-sweet, professional, beautiful, and did I mention those amazing legs?”

Those genetically blessed limbs make it tough for the athletic blonde to shop: “I just can’t walk into Forever 21 or H&M and pick something up,” explains Banker. “I have to spend a bit more money.”

“Almost every day, someone feels compelled to tell me, as if I don’t know. [On modeling gigs] some people will take awhile and then say, ‘Wow, you’re all leg.’ Other models encourage me to get into leg modeling.”

When she’s not being stopped by strangers, she is cooking or reading food blogs.

“I eat mostly vegan, but I’m not strict,” says Banker, whose guilty pleasure is chocolate. “I didn’t like chocolate growing up, but I recently rediscovered it and eat it at least three times a day.”

She keeps her physique through hot yoga and spin classes. “With my height, I am lucky. I don’t gain weight too easily or noticeably, but I also don’t gain good weight easily. I know people will say, ‘Spare me,’ but if I try to get my legs a little thicker, it’s hard for me.”

As for the opposite sex, Banker is single. She grudgingly admits her friends tell her she’s intimidating to men.

“I try not to think about it too much. And I don’t want to sound creepy, but I get approached by a lot of really short guys or guys with fetishes.”

Brooke Banker

While fashion magazines may come calling, Banker says she’d love to get a national commercial campaign — and dreams of being a weather girl or a host on “Good Day New York,” which she watches religiously.

“I love watching Greg [Kelly] and Rosanna [Scotto]. I’d love to be on there. They always look like they’re having so much fun,” says Banker, adding that a friend of hers lives in Kelly’s building.

“The last time I was there, I saw him and I totally froze up,” she laughs.

And while Banker hasn’t always embraced her long, lean build, she knows it’s been a key to her success.

“When I was in high school, I would have preferred to be 4-11 rather than 5-11. But my height has helped me to play volleyball at a high level and to make a career out of modeling.”

I remember being in the French Quarter of New Orleans a few years ago and seeing a stripper out on the street trying to drag customers in who had very long legs. I had to ask...36" inseam on a woman 6' tall in heels. And crazy as became obvious after about 30 seconds of conversation .